Radials for PYFC

High-frequency radar measurements of water velocity are radial in direction relative to the radar location and representative of the upper 0.3-2.5 meters of the water.高频雷达获取的水流速度测量数据，其方向相对于雷达站点呈径向分布，且表征的是水体表层0.3至2.5米范围内的水流状况。